Einstein Telescope (ET) will be a next-generation ground based interferometric gravitational-wave detector designed to explore the Universe to an unprecedented depth and detail. With its 10-15 km long arms, underground infrastructure, and advanced cryogenic technologies to suppress thermal noise, ET aims at achieving a sensitivity up to eight orders of magnitude better than current detectors such as Virgo, LIGO, and KAGRA. The coverage of the low-frequency band, starting at 2 Hz, will enable the observation of earlier inspiral phases of compact binary coalescences, enhancing early-warning capabilities and improving multi-messenger follow-up. However, this increased sensitivity also implies a higher susceptibility to environmental disturbances, particularly in the 2-10 Hz range where anthropogenic, seismic and infrastructural noise noise are most relevant. Therefore, understanding and mitigating environmental contributions are essential to fully exploit the scientific potential of ET. This chapter reviews the ongoing studies on environmental noise for ET, summarizes the main challenges related to site characterization and infrastructure design and outlines the strategies currently under development to ensure optimal detector performance.
We investigate how site-dependent Newtonian noise configurations affect the scientific performance of the Einstein Telescope (ET), a third-generation gravitational-wave observatory. We compare the baseline triangular and 2L detector geometries, with arm lengths of 10km and 15km, respectively, under three site-dependent...
F. Crescimbeni, M. Di Giovanni, D. Rozza et al.· 1 citation
Cosmic Explorer (CE) is a proposed next-generation gravitational-wave observatory that aims to extend our gravitational-wave vision to the edge of the observable universe. With a foundation of technology proven by the National Science Foundation's Laser Interferometer Gravitational-Wave Observatory (LIGO), CE will obse...
L. Datrier, G. Lovelace, Tooba Ansar et al.· 0 citations
Future gravitational-wave observatories such as Einstein Telescope and Cosmic Explorer will require a substantial evolution of the laser frequency stabilization strategies currently employed in second-generation interferometric detectors. In Advanced Virgo and Advanced LIGO, residual laser frequency noise is strongly s...
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S. Schäfer, M. Debus, T. Schmidt et al.· Astronomical Telescopes + In...· 0 citations
Millimeter-wavelength observations provide a uniquely sensitive window into the physics of cosmic explosions, from supernovae (SNe) and tidal disruption events (TDEs) to nova eruptions, stellar mergers and electromagnetic counterparts to gravitational wave (GW) sources. Over the past decade, discoveries across the tran...
K. Koljonen, Tomasz J. Kamiński, Anna Y. Q. Ho et al.· 0 citations
A far-infrared (far-IR) interferometer from a space-based platform would bring about a transformational improvement in the spatial detail of astronomical observations that are inaccessible from ground-based observatories. This orders-of-magnitude improvement would significantly advance studies of newly formed and matur...
C. Benson, M. Bonato, T. A. Davis et al.· 0 citations
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